4mm Solid Carbide End Mill DIN 844 Type N, HSS-Co8 Long 19mm Cutting Length, 4-Flute Weldon Shank - TECWERK

Taking advantage of the HSS‑Co8 alloy and DIN 844 specification, this long, four‑flute end mill delivers reliable performance in steel and cast iron applications; pair its Weldon shank with a suitable holder for secure clamping and order directly via Metav Werkzeuge or consult the team for tailored advice.

End mill DIN 844 Type N D.4mm Cutting length 19mm HSS‑Co8 Weldon Z.4 long — TECWERK

The End mill DIN 844 Type N D.4mm Cutting length 19mm HSS‑Co8 Weldon Z.4 long is a long, centre‑cutting, four‑flute HSS‑Co8 cutter designed for robust slotting and finishing of medium‑strength steels and cast iron.

• HSS‑Co8 for improved heat resistance
• DIN 844 Type N long version
• Weldon shank with drive flat
• Very good for steel and cast iron machining

Durable alloy and standard compliance for consistent cuts

The use of HSS‑Co8 combined with adherence to DIN 844 gives the tool a balance of toughness and wear resistance, making it suited to repetitive shop‑floor tasks. The cobalt‑alloy composition improves performance at elevated temperatures, so the cutter sustains its edge during longer operations. With a 4 mm diameter and a 19 mm cutting length, the geometry is optimised for narrow slots and profile shoulders while maintaining dimensional stability. This engineering focus reduces rework and supports predictable cycle times.

Secure clamping and plunge capability that steadies the process

Featuring a Weldon shank with a drive flat, the cutter affords secure fixation in set‑screw holders, improving concentricity under load. The centre‑cutting design permits controlled plunging into material, eliminating the need for pre‑drilled starts in many applications. Right‑hand cutting geometry and the long flute configuration support reliable chip evacuation in through‑cuts and deeper pockets, which contributes to reduced vibration and consistent surface finishes.

Broad but selective material suitability to consolidate tooling

The tool is very well suited for steel and cast iron, while non‑ferrous metals and stainless steel are conditionally supported; selection of appropriate cutting parameters is advised for those materials. Where coatings are applied to the cutter, the allowable machinable strength increases from around 800 N/mm² (uncoated) to about 1,200 N/mm² (coated), extending applicability into tougher workpieces. This versatility helps to reduce tool changes and simplifies inventory for mixed‑material production runs.

Geometry and flute count focused on efficient machining

A four‑flute configuration offers a compromise between chip space and tool strength, yielding good surface integrity in interrupted cuts and finishing passes. The long version balances reach and rigidity for deeper operations that standard lengths cannot manage. Combined with the cutter’s right‑hand cutting direction and centre‑cutting capability, the design supports straightforward process planning: fewer specialised cutters are needed and machining cycles become easier to standardise across similar parts.

Contact Metav Werkzeuge for a technical consultation on the TECWERK long end mill, or request a tailored recommendation from the Metav team at our Emmerich location to ensure optimal tool selection and delivery.

Technical data

• Article number: 2000866372NW
• Description: End mill DIN 844 Type N D.4mm Cutting length 19mm HSS‑Co8 Weldon Z.4 long
• Manufacturer: TECWERK
• Packaging unit: 1
• UID: 2000866372NW

Facts

• Diameter: 4 mm
• Cutting length: 19 mm
• Flutes: 4
• Material: HSS‑Co8
• Machinable strength: ~800 N/mm² uncoated, ~1,200 N/mm² coated

Special features

• DIN 844 Type N specification
• Long version for deeper pockets
• Centre‑cutting for plunging
• Weldon shank with drive flat
• Right‑hand cutting
• Very good for steel and cast iron; conditionally suitable for NE‑metals and stainless steel

FAQ

Is this cutter suitable for plunging operations?
Yes. The TECWERK End mill DIN 844 Type N D.4mm is centre‑cutting, which allows controlled plunging into workpieces without prior drilling in many cases.

Which materials are best machined with this tool?
The cutter performs very well with steel and cast iron; non‑ferrous metals and stainless steel are only conditionally suitable and may require adapted feeds, speeds or coating.

Does the Weldon shank require a specific holder?
The Weldon shank with drive flat is intended for set‑screw holders or similar fixtures that secure the flat; matching the holder to the shank ensures stability under load.

How does coating affect performance?
A coated version increases the usable material strength from about 800 N/mm² (uncoated) to roughly 1,200 N/mm², extending the tool’s service in harder workpieces.

What advantages does the four‑flute geometry provide?
The four‑flute design improves finish quality and tool strength while maintaining acceptable chip clearance, making it suitable for finishing and semi‑finishing of profiles.

TECWERK: Manufacturer / Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund